Hot Black Oxide
Hot Temperature Black Oxide
EPi's ULTRA-BLAK 400 is simply superior to other hot black oxides.
ULTRA-BLAK 400 is faster, more versatile, and more efficient than any other hot black oxide.
With a superior formula, higher concentration, and no smutty rub off, ULTRA-BLAK 400 will save you a whole lot of time and money.
-High Performance hot black oxide for High Performance Customers-
Benefits of Hot Black High Temperature (285º F - Sodium Hydroxide, Oxidizer Nitrite/Nitrate Bath)
10- 20 minute blackening time: (faster than other hot black oxides)
Offers incredible abrasion resistance
Lasting corrosion protection: adds years to a part's service life.
Beautiful, Glossy blue/black color
Fe2O3 is converted into Fe3O4 (magnetite black rust)
Meets military spec MIL-DTL- 13924D and AMS 2485 H
General Information/ Process notifications
Requires ventilation for caustic fumes
Boiling solution care required: add water and chemistry
Higher capital cost than room temperature process
pH adjust waste treatment system
*Will not blacken cast iron or steel castings (turns red/mahogany color.) For cast iron see Ultra-Blak 404
Black Oxide for Steel is an alkaline salt and oxidizing agent mixture containing penetrants, catalysts, activators, rectifiers and wetters which, when dissolved in water and heated, will produce a black oxide (Fe3O4 - magnetite) finish on steel.
Black Oxide for Steel is a highly concentrated liquid solution of EPi’s oxidizing salt formulation containing a blend of activators, rectifiers, catalysts, penetrants and wetters
A liquid oxidizing agent for blackened steel which does not contain any Sodium Hydroxide. The black oxider purchases 50% by weight liquid Sodium Hydroxide through a local commodity chemical supplier.
Liquid Rectifier Additive for Black Oxide Solutions to control excessive build up of iron and copper.